STANDARD MODEL SINGLE AXIS
Each platform is custom-made to buyer's specifications of size and latitude.
Apple-ply plywood - a stiff and rigid material - is used for the wooden components. It is sanded and beautifully finished with a long-lasting penetrating sealer.
The wide 3-point ground support offers unprecedented stability for this platform design. Adjustable feet and a bubble level make setup and leveling a snap.
The direct roller drive yields very accurate tracking, free of short term periodic error and free of tangent error.
Extended tracking runs of 75 minutes or more are now standard, with a quick reset time of a few seconds.
The stepper motor drive system, with its built-in drive corrector and push button hand control offers these features:
Consistent tracking accuracy
Adjustable drive rate
Choice of lunar or sidereal speeds
Instantly responsive guiding slew in right ascension (30% sidereal rate) and a fast centering slew (14 x sidereal rate)
12V operation with low power drain (200 milliamps)
Direct interface capability with CCD automatic trackers
The Standard Single-axis Platform can be upgraded to a Dual-axis Platform at any time for just the difference in price between the two models.
STANDARD MODEL DUAL-AXIS
All the features listed above, plus...
A cam action stepper motor assembly provides a push-button operated two-speed slew in declination, useful for both fine guiding and fast centering. With this type of platform one can easily guide a long exposure prime focus photograph. Others find the Dual-Axis feature useful for centering an object in a CCD or video camera, or for making fine adjustments when using high powers.
COMPACT MODEL SINGLE AXIS
The Compact Platform gives you basic RA tracking for high power visual use and some light photography. It differs from the Standard Single-axis Platform in that it has no push button slew control, no choice of lunar/sidereal rate, and no possibility of being upgraded to a dual-axis format.
See the Compact page for full details on this model Platform.
THE NEW ALUMINUM PLATFORM
All welded aluminum construction
Light in weight, but with superior stiffness and durability.
Available in Single-axis and Dual-axis formats
See the Aluminum Platform page for details.
These Equatorial Platforms add just a few inches to the height of your Dobsonian telescope, yet provide you with a full motorized tracking capability. Wherever you point the telescope, using smooth, stable Dobsonian movements, you are tracking automatically and precisely.
I can also supply advanced telescope makers with some of the drive assemblies and electronics needed to build their own platforms.
Please feel free to E-Mail, write or call me about your needs, problems, or questions concerning Equatorial Platforms.
1. Cover page 2. Table of Contents 3. Overview 4. Giving Your Big Dob The Ability To Track The Sky... 5. Owners Speak Out... 6. Platform Components 7. Platform Operation - photographic illustrations 8 Astrophotography with an Equatorial Platform 9. More astrophotos using Equatorial Platforms 10. Platform Features 11. Price List